My 78 Jazz is showing a small split in the fingerboard, between the pearloid inlay and the nut. A tech mentioned it after working on my bass (I thought it was just a scratch) It is caused by the bullet thrussrod forcing it's way up...
He told me it was just fine and should not worry about it much, "It could last 100 years"... He also mentioned it is quite a common thing on 70's Fender (bass)guitars with a bullet thrussrod.
Same problem is mentioned in the following article (please scroll down to the bottom of the article):
http://www.bassplayer.com/article/al...s/mar-07/26164
It still worries me a bit though...

Anybody else noticed this on their 70's Jazz? What can be the consequences of this? How can this be fixed when it get's worse?
thanks for the help...